Whistle-operating mechanism



Oct. 28, 1930. H. BAXTER 1,779,833

WHISTLE OPERATING MECHANISM 'Filed May 26, 1928 I) I I vQY 1 Patented Oct. 28, 1930 i 1 1, 779 -,8 38,-

' HENRY BAXTER, or sonnnne rany, nnwyoiaii wmmmremme{m mma Application filed Ma 26,1528. 's ri i'iat. 280,722, 1

This invention relates tomechanism for fstem, 2 is engaged-'bya curved face head, operating whistles, more particularly toitfl formed on the lower arm ofia double those used on locomotives, and has for its armed operating lever,4, which isp voted to object to provide a simple and efficient means lugs, 1 on 1theca'sing,:bya pin, ii. :The upa 5 for effecting and controlling blasts of theflper arm of theoperating:lever'is connected ts whistle, which shall bereadily applicable to v to a cord,'5-, orothersuitable nieansforvman- 7 existing designs of whistles and be operable ua llylimpartin'glmovement to the operating l I either by fluid pressure or manually as 'deelever,uponlitspivot pin,4 leading to apoint 1 sired. V convenient for actuation of the ilever by-the 10 The improvement claimed is hereinafter engineerfi I 1, f .v 60 fully set forth. I f iTo'providefforithe operation'o'f*theappli- In the accompanying drawing: Figure le anoe by fluid pressure,"whnidesii edfapistonis a side view, in elevation, of a portion of a chamber, lgrjg f m d in-the -casing; t the locomotve boiler, illustrating an application end thereof further frointhe inlet;-1 ',"fsaid ;/;1 of the invention, Fig. 2, a vertical lon -1'ehambertbem 'closedty-aremmuemam tudinal central section, on an enlarged scale, 1 A piston,-r6, fixedon a stem, 6 is fitted through the operating mechanism, and Figs ':in the piston chamber,'1 ,to which fiuidlpres- 3, 4, 5 and 6, vertical transverse sections, onflsure, which, maybe steam o'riiair, -is supplied the same scale, on thelines, a a, 6 6,0 0, and. through axpipe, 16 controlled by'ia valve 7 20 d (Z, respectively, of Fig. 2. 1 ,(not' shown) whichflis located in" a position T In the practice of the invention, referring readily-accessible by the engineer. iaxThe pisdescriptively to the specific embodiment: ton seeme terminates closely adjacent, that thereof which is herein exemplified, the opisto say, with-a slightdegreeof clearance, to crating mechanism is enclosed in a casing or; theadj acentend ofvthe stem, 2 of the operat- 1:1 housing, 1,,located above the boiler, 9, ancl- --ing:valve, so "that, when subjected to fluidbetween the same and the whistle 10; The pressure, 'it-Will move said stem, in direction casing, 1, is provided with a bolting flange, to unseat the] eperating valve and admit 1", for attachment to a suitable bracket, 3, steam to effect a blast of the whistle. 'Aleaksecured to the boiler. A pipe inlet, 1 forxage;port,lff,'is formed in the piston chamber,

2 30 admitting steam from the boiler toblow the, to permit the escape of any motive fluid that V whistle, leads into one end'of the casing and leak past the packing of the piston. V is controlled by a valve, 2, of the single pop- {In themanualoperation of-the appliance, pet type. The valve, 2,which is located in the inlet, 1 of the casing being continuously a chamber at one end of the casing, having, open to'th'e boiler, steam, at boilerpressure, 35 a removable cap, 1, closes on a seat, 1, in"'norma lly maintains'the' gvalve, 2, against its the casing, and is fixed on a hollow stem, 2, seat, and prevents tl1e passage of steam'to the having formed therein the passages, 2*, dis whistle. 'Further, after valve hasbe'e n posed on either side of the central .web in unseated, thevboiler pressure tends to return which is formed the slot, l and which exit toits closed position." Movement-, by the .40 tends through a passage, l in the casing; engineer, of the-operating lever, 4, in direc-i 190,

from the valve seat to a chamber, 1 from tioirto unseat the valve, permitstheflow of which a tubular lateral outlet extension, 1 steam, through 'the'passages, 2 ,-formed in the leads to the whistle, 10. The periphery oflhollow stem, 2 through the casing, to the. the valve stem, 2*, adjacent the slot, 1 is"whistle,.1,thereby "effecting a blast thereof, 545 formed to fit closely in the passage, 1 and j-which isjterminated bytherelease'of the o is preferably provided with water-grooves erating lever, by-the engineer.v to prevent leakage. Steam from the boileris The/ power operation of the applianceis supplied to the inlet, 1, through a continueffected by the admission of fluid under pres- 7 ously open pipe, 1. transverse slot, 1 ithroughthe;pipe, 6?,to the piston cham- 3; ;-50 formed in the central web, 2, of the valve ber,l resultantjuponthe opening, by, the

engineer, of the valve controlling said pipe, which valve may be of any suitable known construction, adapted tor the admission and exhaust of fluid, and not forming, in and of itself, part of the present invention, it is not herein, in detail, set forth.

It will be seen that, the appliance herein-before described, provides duplicate means for sounding the whistle, by manual'and by power operation, respectively, No valve is I HENRY BAXTER.

required in the whistleitself, so 'thatany form of whistle may be usediwith this mechanism, by removing lts operating valve and t n pe g er, .l th se..- r pm- .o 1

vided for by the invention, Power opera- 7 tion ordinarily eliminates cumbersome rods,

jaws, pins, shafts, etc. which must be mainl tained againstwear and vibration, while this 'nechanism requires merely a-simple-ropeor cable for emergencywuse only, in 'CZISBIYOIE failure ofthe poweroperating means. *It

further provides the capacity of ready alppli-' .locomotives,adaptable to any location on the new whistles will-not have}; to be purchased, and no maintenance of the hand operating prising a casing partitioned into lirst,"second,'

- for admitting steam from a boiler-and alf screw cap closing the outer end thereof locomotive, and capable of fittinginfexistingcle'aranc'es, and '18 economical in that rigging will be required. it ,1

'What-isclaimed as -theinvention g ad j siredto be secured'byLettersPat t i cationofpower operation'means to existing A'me'chanism for operating whistles, com f third, and fourth,- axially aligned chambers, i v '7 a the first chamber having a port ina sidewall whereby the interior of said chamber-may be v opened without interfering with the steam admitting port, the second chamber having a slotin one of its walls for the passage of lever, the third chamber having a passage-- -way in its side wallthreaded ffoi' the attach-- ment of a connection to awhistle, said second chamber being in communication with said first and third chambers, and the fourth chamber having a port for admittingpresfrom the second chamber when closed and stem to the thirdchamber when the valve isi ofa lever; a lever pivoted to thecasing and havlng an arm projecting through'the slotinff I sure fluid, a wall entirely separating the fourth chamber from the third chamber and 93a screw plug closing the end of the fourth chamber opposite said wall, a valvein the .first chamber separating the first chamber havinga stem fitted in the second chamber separating the second chamber from the third tchamber and formed with a passageway adapted to lead steamenteringv the second chamber from the first chamber through the 1 v the second chamberand into theslot in the valve stem; and a pistonin the fourth cham-' 

